The advice below applies to a temperate to a cold climate. Depending on the width of the broiler house Tulderhof advises the following.
|Type of pig house||Air inlet||Width of house|
|Sows in group housing||Twin OS||Until 20m|
|Sows in group housing||Flash||> 20m|
|Sows in group housing with obstacles in the ceiling||Flash||various|
|Sows in box housing||Flash||various|